Gitlab installation process

sudo yum install -y curl policycoreutils-pythonopenssh-server

sudo systemctl enable sshd

sudo systemctl start sshd

yum install firewalld systemd -y

service firewalld start

sudo firewall-cmd --permanent --add-service=http

sudo systemctl reload firewalld

sudo yum install postfix

sudo systemctl enable postfix

sudo systemctl start postfix

wget  https://mirrors.tuna.tsinghua.edu.cn/gitlab-ce/yum/el7/gitlab-ce-10.0.0-ce.0.el7.x86_64.rpm

yum install policycoreutils-python

rpm -i-the-10.0.0-gitlab ce.0.el7.x86_64.rpm

vim /etc/gitlab/gitlab.rb (modified external_url -> server HTTP: // IP : port)

gitlab-ctl reconfigure

gitlab-ctl restart